80906280 has 256 divisors, whose sum is σ = 309657600. Its totient is φ = 16450560.

The previous prime is 80906279. The next prime is 80906291. The reversal of 80906280 is 8260908.

It is a super-2 number, since 2×80906280² = 13091652286876800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 338401 + ... + 338639.

It is an arithmetic number, because the mean of its divisors is an integer number (1209600).

Almost surely, 2^80906280 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80906280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154828800).

80906280 is an abundant number, since it is smaller than the sum of its proper divisors (228751320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80906280 is a wasteful number, since it uses less digits than its factorization.

80906280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304 (or 300 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 80906280 is about 8994.7918263849. The cubic root of 80906280 is about 432.5079330742.

The spelling of 80906280 in words is "eighty million, nine hundred six thousand, two hundred eighty".